Spring River

Spring River is an experimental, asynchronous queue-based microservices framework for Node.js (v1.0.36). It implements the Rapids/Rivers/Ponds pattern, where 'rivers' produce solutions and 'springs' generate needs, communicating via AMQP (e.g., RabbitMQ). Key differentiators include a simple bootstrap approach inspired by ZEIT's Micro, built-in predicate decorators for packet filtering, and environment-based AMQP address configuration. However, the project is marked as experimental and has not seen updates since 2017, making it unsuitable for production use.